Chock-block for logging-cars



(No Model.) 2 Sheets-Sheet 1.

H. A. TODD & A. H. ANDERSON.

GHOGK BLOCK FOR LOGGING ems.

No. 472,152. Patented'ApI'. 5, 1892.

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2 SheetsS1 1eet H. A. TODD & A. H. ANDERSON.

GHOGK BLOCK FOR LOGGING CARS.

No. 472,152. Patented Ap 5, 1892.

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y f/ nzeru'ard, mm 6 dilomzeyd WIZ/VESSES ONITED STATES PATENT OFFICE.

HERMAN A. TODD AND ALFRED H. ANDERSON, OF SHELTON, WASHINGTON.

CHOCK-BLOCK FOR LOGGING-CARS.

SPECIFICATION forming part of Letters Patent No. 472,152, dated April 5,1892. Application filed August 8, 1891. Serial No. 402,130. (No model.)

To aZZ whom it may concern:

Be it known that we, HERMAN A. TODD and ALFRED H. ANDERSON, citizens ofthe United States, residing at Shelton, in the county of Mason and Stateof Washington, have invented certain new and useful Improvements inChock-Blocks for Logging Oars, as set forth in the accompanyingdrawings, forming part of this specification, in which- Figure 1 is aside elevation of a loggingtruck, showing our improvements appliedthereto. Fig. 2 is an end view of the same. Figs. 3, 4, and 5 are detailviews of a portion of the I-beam, showing the chock-blocks in differentpositions. Fig. 6 is a side view of one of the chock-blocks, showing aportion of the I-beam in section. Fig. 7 is a similar view showing thechock-block thrown outward by the force of the spring behind it. Figs.8, 9, and 10 are details of the clutch for holding the chain.

Our invention relates to means for holding logs on cars while intransit, with simple means of removal for unloading; and it consists ofthe constructions and combinations of devices which we shall hereinafterfully describe and claim.

To enable others skilled in the art to which our invention appertains tomake and use the same, we will now describe its construction andindicate the manner in which the same is carried out.

The object of our invention is to provide an efficient and adjustablechock-block adapt ed to be placed atany position on the bunk or I-beamand to be quickly disengaged or removed without danger to the unloaders.

On many logging cars or trucks where chockblocks are used it isnecessary for the attendants to go to the side of the car that the logsare to be discharged from in order to remove the chock-blocks, chains,or whatever appliances may be used. This practice is extremely dangerousand often fatal to the operators; and our construction is designed tomeet these difliculties and insure the safety of those who unload thecar or truck.

In the accompanying drawings we have illustrated a form of car or truckA adapted for logging purposes, the said car or truck being providedwith the usual bunk or I-beam B, which extends transversely across thecar or truck, with its flanges vertically disposed, as shown in Fig. 1.This bunk or I-beam is suitably mounted upon the upper center plate 0,which in turn is secured to the lower center plate 1) by the lugs andbolts a and b, respectively. These center plates form no part of thepresent invention, and they are fully described and claimed in anotherapplication filed by us of even date herewith.

Upon the bunk or I-beam the chock-blocks E are adapted to be placed, asshown in Fig. 2, to sustain the logs in position. Each chockblook isrecessed at 10 upon its inner side to receive the vertical flange of thebunk or I- beam, and at the ends of this recess are formed the lips 11,adapted to fit over said flanges, as shown in Figs. 1, 6, and 7, to holdthe chock-block to the bunk or beam. The wall at the top of the recessis preferably straight, though inclined to the major axis of the block,and the wall at the lower end of the recess has a part of its surfaceparallel with the top wall and the remaining portion formed at anincline to the straight portion, as shown. In the recessed side of theblock is formed a groove, in which is secured one end of a bentspring-plate F, while the other end of said plate is free and normallyextended, as shown in Fig. 7. This spring-plate is designed toautomatically throw the chock-block away from the bunk or I-beam-whenthe block is moved from one position to another, as shown in Figs. 6 and'7 and as we shall presently disclose.

In referring to Figs. 3, 4i, and 5 it will be observed that the lips 11,which bound the ends of the recess in the chock-block in which the bunkor I-beam is seated, have each a straight edge 12 and an edge 13inclinedthereto, the straight and inclined edges of one lip being relativelyreversed to the same edges of the other, and as the normal position ofthe chock-block is an inclined one, as shown in Figs. 3 and 4, it willbe manifest that when the block is moved from the position in saidfigures to the vertical position assumed in Fig. 5 the inclined portionor edge of the upper lip 11 will become parallel and flush with thecontiguous edge of the flange of the bunk or I-beam. \Vhen in thisposition, the spring-plate F, which is confined between the bunk orI-beam and the recessed side of the chock-block, exerts its power tothrow the chock-block sidewise from the beam, (see Fig. 7,) therebyenabling the logs to be discharged.

The construction of the chock-bloek, with its lips and its straight andinclined wall at the bottom of the recess, is such that when the blockis in operative position (see Fig. 3) the outward pressure of the logsagainst the block will cause the binding of the top and bottom walls ofthe recess against the top and bottom edges of the bunk or I-beamflange. Therefore the greater the pressure the greater will be thefrictional contact between the block and beam. o have also disclosed ameans whereby the blocks may be operated from the side opposite to thaton which the block is attached without endangering the life or limbs ofthe unloaders, and these means consist of a safety-chain H, one link ofwhich is placed in a groove I in the outer face near the lower end ofthe chockblock and secured byabolt I. This groove I is sunk below theface of the block to take the strain off the bolt, and it is made tosnugly receive the link, after which the chain is carried across thetruck or car and adapted to be secured by a clutch J, preferably securedto the I-beam by bolts, rivets, or otherwise, as shown in Figs. 2, 8, 9,and 1 O. The clutch has its head slotted at g to receive one of thelinks of the chain, and the base of the head has semicircular grooves hfor the reception of the link immediately in front and rear of the slotin the head, while the floor or base of the head is extended rearwardlyat Z to form a fulcrum for a lever or bar (not shown) to raise theengaged link out of the slot when there is any great strain upon it andit binds.

WVishing to discharge a load the operator at the right of Fig. 2 willrelease the chain at that point from its engaging clutch and hook againwith the last link of the chain, so that when the chock-block falls awayfrom the bunk or I-beam it will not become detached from the car. Afterthis last link has been secured the operator will drive the lower end ofthe chock-block forward with a bar or tool until said bar assumes avertical position, Fig. 5, when the spring-plate will throw the upperportion of the chock-block from its engagem ent with the bunk or I-beamand thereby release the logs, which discharge without danger to theattendant.

Having thus described our invention, what. we claim as new, and desireto secure by Letters Patent, is-

1. A chock-block having a recess adapted to receive the piece to whichit is fitted, the

end walls of the recess having straight and inclined walls, whereby theblock may be moved from an inclined to a vertical position, and viceversa, substantially as herein described.

2. A chock-block recessed to receive the piece to which it is fitted andhaving lips with oppositely arranged straight and inclined edges, saidrecess having a straight upper wall and a lower wall having a straightportion and a portion inclined thereto, substantially as hereindescribed.

3. The combination, with a bunk or beam, of a chock-block having lipsprovided with straight and inclined edges, said block adapted to bemoved from an inclined to a vertical position, and vice versa, and aspring interposed between the adjoining faces of the bunk or beam andchock-block for automatically disconnecting the block from the beam,substantially as herein described.

4. The combination, with a bunk or beam, of a chock-block having arecess whose end walls are inclined to the major axis of the block,whereby the block is held by frictional contact with the beam,substantially as herein described. 1

5. The combination, with a bunk or beam,

of a chock-block having a recess in one side provided with inclined topand bottom walls, and lips on said blocks fitting over the bunk or beamand each provided with edges inclined with relation to each other andthe edges of one lip being oppositely located to those of the other,whereby the block may be moved from an inclined to a vertical position,substantially as herein described.

6. The combination, with a bunk or beam, of a chock-block adapted to befitted to said bunk or beam and having retaining-lips with straight andinclined edges for holding the block to the beam in one position, andaspring interposed between the block and bunk or beam for automaticallydisconnecting the block and throwing it laterally from the beam when theposition of the block is changed from an inclined to a verticalposition, substantially as herein described.

7. The combination, with a chock-block, of a chain connected at one endwith the block and having its opposite free end secured ata point to andremote from the block, and a clutch adapted to engage thelinks of thefree end of the chain to secure the same, substantially as hereindescribed.

8. The combination of a. bunk or beam, a chockblock having a groove inits face, a chain having one of its links adapted to be fitted in saidgroove, and a clutch adapted to engage the links of the opposite end ofthe chain, substantially as herein described.

9. The combination of a bunk or beam, a chock-block adapted to be fittedthereto and to be rocked from one position to another, a chain havingits link at one end adapted to fit a groove in the face of thechock-block, and the free end of the chain and having its floor 10 aclutch at the opposite end of the bunk or extended to form a fulcrum forthe release of beam having a slotted head to receive the the links,substantially as herein described. llnks of the free end of the chaln,substan- HERMAN TODD.

tially as herein described.

10. The combination, with abunk or beam, ALFRED ANDERSON a chock-block,and a chain connected there- Witnesses: with, of a clutch secured to thebunk or beam, GEORGE LAWLER, having a slotted head to receive the linksof M. F. WARD.

